php preg_match regular expression function example, phppregmatch function_PHP tutorial

php preg_match regular expression function example, phppregmatch function

Regular expressions are used in almost all programming languages. This example introduces the application of the regular expression preg_match function in php .

The preg_match() function is used for regular expression matching and returns 1 successfully, otherwise it returns 0.
preg_match() will stop matching after one successful match. If you want to match all results, you need to use the preg_match_all() function.

Grammar:

preg_match (pattern , subject, matches)

参数 描述 pattern 正则表达式 subject 需要匹配检索的对象 matches 可选，存储匹配结果的数组 Parameters	Description
pattern	Regular expression
subject	Need to match the retrieved object
matches	Optional, array to store matching results

Example: This example matches strings with capital letters followed by . and spaces. It can only match J., because preg_match() will stop matching after one successful match, and will not match again later. Matched.

Output result:

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Related reading:

PHP regular expression function usage examples

php preg_match function and php preg_match_al function l instances, methods, examples

php preg_match_all() function usage example

php preg_match regular expression function example

php preg_match regular expression function example, phppregmatch function regular expressions are used in almost all programming languages, this book An example introduces the application of the regular expression preg_match function in php...